Interesting. I just got a hit from someone Googling the name "Richard O. Spertzel". The domain is army.mil and the ISP is listed as "HQ US Army Medical Research and Development Command".
I assume some of Bruce Ivins colleagues are trying to solve this case for themselves.
I haven't been posting much on this blog but I have left a few comments at Glenn Greenwald's blog over the past few weeks. Glenn is now on holidays and his comments section is deteriorating rapidly, unfortunately. You can read my comments to date here.
UPDATE: And now another hit from darpa.mil (Defense Advanced Research Projects Agency) in Virginia. Obviously somebody is still on this story...